LAS VEGAS (KSNV & MyNews3) -- A southeast neighborhood is in shock today, after a 4-year-old boy died in a house fire Tuesday night.

Firefighters say other people were trapped inside the house, but managed to escape. Sadly the boy could not get out.People stopped by the site of the fire to leave toys and flowers in honor of 4-year-old Maximiliano Ibarra Martinez.

Martinez, who had autism, is being remembered by his former teacher Angela Anguiano.

She's devastated about the fatal fire, and says she will really miss little Max.

The cause is still being investigated, but the Clark County Fire Department says the fire did cause about $100,000 in damage.

According to Clark County spokeswoman Stacey Welling, Fire Department personnel reported smoke and flames coming from the northwest side of the house upon arrival and received reports of victims trapped inside.

The first arriving firefighters immediately entered the home to search for victims.

Firefighters located the young victim inside the home unconscious and not breathing. Fire officials say the boy’s mother and a sister were at home at the time of the fire and were unharmed. A Clark County Fire Department rescue unit transported the victim to University Medical Center where he was pronounced dead.

An initial second alarm was called on this fire due to reports of multiple victims being trapped, with a total of 54 personnel responding. Arriving crews were able to knock down the fire within about 10 minutes.

Some units were cancelled upon arrival or while en-route to the scene.

The Clark County Fire Department and Las Vegas Metropolitan Police Department are conducting a joint investigation as part of their normal protocols for investigating any fire involving a fatality.

Last year, the Clark County Fire Department had two fire fatalities, the lowest number of fatalities on record for the department. In 2012, there were 13 fatal fires in Clark County.